Machine for making sand molds.



I. M. HANNON.

MACHINE FOR MAKING SAND MOLDS.

APPLICATION FILED MAY 27, 1913.

Patented Nov. 2, 1915.

BY ,I

A TTORNEY.

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coLUMsIA PLANouRAPH C0..WASH1NOTON. D. C.

TOI-IN M. HANNON, OIE" HARTFORD, CONNECTICUT.

MACHINE ron MAKING SAND MoLDs.

Application filed May 27, 1913.

T0l all whom it may concern: Be it known that l, JOHN M. HANNON, a citizen of the United States of America, and

`resident of Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful mprovements in Machines for Making Sand Molds, of which the following is a full, clear, and exact description.

`Thisinvention pertains to improvements shown, described and claimed in Letters Patent of the United States granted to me Oct. 15, 1912, No. 1,0%1274, in which the machine according to said patent comprises a bed for supporting'the separable parts of a flask and a yoke frame embracingand extending above the bed and adapted tov be swung off to one side of the latter Aand having on opposite side members thereof slidable cope lifters with means for operating them, there was alsoprovided at an upper portion of the yoke depending blade-like members between which the lifted cope would be brought to engagement so that when the yoke is swung sidewise carrying, and temporarily holding the cope therewith, the latter would not become displaced from the initial position which it occupied relatively to the yoke frame.

It has been found that the-aforementioned blade-like members required a nicety of ad* justment and the external dimensions of different copes which might be used had to conform one to another in order t0 be per-1 mitted to engage between the depending blade-like members and in such engagement to have a practically close fit therebetween.

The object of the present invention is to provide means u p to and against which the lifted cope may be brought and which in coaction with the cope lifters act for the retention of the cope against displacement relatively to the yoke, and which means is of greater simplicityV than that formerly em ployed for the corresponding purpose and requires no such nicety of adjustment as was formerly required and is adapted for the engagement with a suitable portion of the top of the cope instead of engagement with the opposite vertical sides of the latter.

The invention is described in conjunction with the accompanying drawings and is set forth in the claims.

In the drawings Figure 1 isa side view of the molding machine inclusive of the outer and inner yokes thereof upon upper Specification of Letters Patent.

Patented Nov. 2, 1915.

Serial No. 770,258.

portions of which latterthe improved ap pliances of this invention are shown. Fig. 2 is a similar side elevation showing the inner yoke and the lifted cope ,supported and steadied thereby as swung to an offside position. F ig. 3 is a partial plan view and horizontal section as shown below the line 3 3, Fig. 1; and Fig. t is a front elevation of one side portion of the machine.

In the drawings, A represents the elevator bed and It and c the nowel and cope portions of the flask,-p representing the pattern plate the ends of which project beyond the ends. of the flask and the cope has the endwise projecting lugs or extensions c2.

C represents the inner yoke frame and D the outer yoke frame, these both being pivotally mounted at the lower portions of their side members. The inner yoke frame is made at the top with offset brackets e e which intermediately thereof are firmly united to the upper ends of the opposite upright. yoke members l d and project forwardly and rearwardly relatively to the latter, and the extremities of the brackets e are united by the horizontal parallel rigidly connected tie bars j f.

The opposite side members el d of the inner yoke are provided with slides E E which are formed with guideways whereby they are engaged with and adapted forvertical movements relatively to the said side members; and these slides are equipped each with a1 cope lifter g and a pattern plate lifter 1", their normal locations and relations to the cope and pattern plate extensions being as represented in Fig. 4:.

At the upper central part of the inner yoke C- is a horizontal rockshaft z5 having duplicated lever arms u rigidly affixed thereto near their outer ends, u2 representing an operating leverv arm for the rockshaft; and the lever arms u uV are connected with the cope lifter slides E by links o.

On the tie bars f ,f comprised in the inner 'yoke are pairs of perforated bracket members w w held in any desired adjustment along the length of the tie bars by the set screws 102. These brackets fw have portions extending below their places of attachment on the rods f with horizontal transverse holes w3 therethrough through which are engaged the shank portions of rods or bars Khaving offset or crank-like inner end portions or extensions s which are of such length as to extend inwardly beyond and extremities thereof are revolubly` adjustable so that theymay be positioned both properly over the cope of whatever size the same may be, and also nicely as to height so that Y the lifted cope will be brought to have its top in firm contact engagement with such parts.

r The engagement or bind between the cope lifters and the offset portions of the Amembers K is such that whenthe inner yoke is swung ofside, as represented in Fig. 2, the cope will be steadily carried thereby and without any displacement or shifting relatively thereto and so that when the yoke is returned toits original upright position,

the cope will be in position to be let .down -again to match with the nowel with entire precision.

I claim 1. In a machine for making sand molds, in combination, an elevating bed for supporting the separable parts of a flask, and a yoke frame embracing and extending above vthe bed, pivotally mounted whereby it may be swung off to one side of the bed, provided on the opposite side members thereof with ,cope lifters which are slidable on such side members, also providedv with means for slidably operating such cope lifters, and provided at an upper portion thereof with a member up against the under side of which the top of the cope, elevatedby the .cope lifters, may be brought to engagement.

2. In a machine for making sand molds, in combination, an elevating bed for supporting the separable parts of a iiask, and a yoke frame embracing and extending above the bed, pivotally mounted whereby it may i be swung off to one side of the bed, provided on the opposite side members thereof with cope lifters which are slidable on such members, alsohaving means for slidably:operating such cope lifters, and provided at an upper portion thereof with a vertically adjustable member up againstthe underL side of which the top of the cope, elevated by the cope lifters, may be ,brought to. engagement. v

In a machine for making sand molds, in combination, an elevatingbedfor supf porting the separable .partsofa Hask, and a yoke frame embracing'and extending above the bed, -pivotally `mounted whereby it may be swung off to one side of the bed, provided on the -opposite'side members thereof with cope lifters which are slidable on such members, also having means for slidably oper,- ating such cope lifters, and provided at an upper portion thereof with a member which is both vertically adjustable and also transversely and horizontally adjustable,and up against the lower part of whichfthe cope,

elevated by the cope lifters, maybe brought Y to engagement. Y. Y

4. In a machine for making sand molds, in combination, an elevating bed for supporting the separable parts of a flask, and a yoke frame embracing and extendingv above the bed, pivotally mounted whereby it may be swung off to one side of the bed, provided on the opposite side members thereof with cope liftersv which are slidable on such side members, and having means forV slidably operating such cope lifters, and provided at an `upper portion thereof with oppositeiy located, rotativelyadjustable, rods or bars having offset extensions, revolubly carried by suchbars, and against the under sides of which the cope, elevated by the cope lifters,

may be brought to engagement. y

Signed by me at Springfield, Mass., in

Vpresence of two subscribing witnesses.

JOHN M. HANNON.

I/Vitnesses:

G. R. DRIsooLL, WM. S. BELLows.

Copies of this patent may be obtained for ve cents each, by addressing the Commissionerifvlatents,

Washington, D. C. v i 

